How to coordinate all of the various messages and apps with websites and other digital communications to create a balanced and nuanced view is difficult. Luckily there's a new app that's helping: Slack.

Developed just three years ago, Slack's increase in use is rapidly expanding, with 500,000 daily users and 90,000 companies relying on the service. You can message others, you can group chat, and you can get smart notifications, among other functions. It's easy to use and noteworthy for its sophistication, too.